Hardware emulation of transverse flux machines based on an analytical model considering saturation effects

Transverse flux machines have advantages at high torque densities and low speed. On the other hand, the torque ripple of a transverse flux machine is complicated to control. For many control methods the precise knowledge of the machine's behavior is essential. To describe this behavior and to get more detailed information about processes inside the machine, an analytical model is designed which uses the analogy between magnetic permeances and electric capacitors, coupled by a gyrator. At the input of the model are the phase voltages and the mechanical load. The outputs are the force and the rotor position. The model can be used for both verification of control methods and obtaining information of the machine's behavior. The results of the new analytical model are compared with measurements on a linear prototype and emphasize the capability of the model.